Navigation device assisting road traffic congestion management
First Claim
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1. A mobile navigation device (118) configured for providing navigation information to a mobile user on a road network, depending on a geographic position of the device and upon being programmed to guide the mobile user to a pre-determined destination via an itinerary, wherein the device comprises:
- a storage (406) for storing information about a segment of the road network, including historical data representative of respective historical traffic progress on respective roads in the segment;
a wireless receiver (404) for receiving data indicative of current traffic progress on a stretch of a specific road in the segment;
a data processor (414) coupled to the receiver and operative to;
determine if the stretch is included in a portion of the itinerary to be traveled;
if the stretch is not included, to keep using the itinerary;
if the stretch is included, using the historical data to determine an alternative itinerary to the destination based on comparing a first expected travel time for the itinerary, given the current traffic progress, to a second expected travel time for the alternative itinerary; and
depending on a result of the comparing, starting to provide the navigation information with respect to the alternative itinerary.
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Accused Products
Abstract
A navigation device has a GPRS receiver for receiving real-time information about slow traffic flow or slow average speed on a stretch of motorway, indicating congestion. The device calculates a new itinerary to avoid the congestion, based on historically recorded speeds on secondary roads weighed by the current average speed in the congestion area.
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Citations
8 Claims
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1. A mobile navigation device (118) configured for providing navigation information to a mobile user on a road network, depending on a geographic position of the device and upon being programmed to guide the mobile user to a pre-determined destination via an itinerary, wherein the device comprises:
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a storage (406) for storing information about a segment of the road network, including historical data representative of respective historical traffic progress on respective roads in the segment; a wireless receiver (404) for receiving data indicative of current traffic progress on a stretch of a specific road in the segment; a data processor (414) coupled to the receiver and operative to; determine if the stretch is included in a portion of the itinerary to be traveled; if the stretch is not included, to keep using the itinerary; if the stretch is included, using the historical data to determine an alternative itinerary to the destination based on comparing a first expected travel time for the itinerary, given the current traffic progress, to a second expected travel time for the alternative itinerary; and depending on a result of the comparing, starting to provide the navigation information with respect to the alternative itinerary. - View Dependent Claims (2)
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3. Software (416) for a mobile navigation device (118) configured for providing navigation information to a mobile user on a road network, depending on a geographic position of the device and upon being programmed to guide the mobile user to a pre-determined destination via an itinerary, wherein the device comprises:
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a storage (406) for storing information about a segment of the road network, including historical data representative of respective historical traffic progress on respective roads in the segment; a wireless receiver (404) for receiving data indicative of a current traffic progress on a stretch of a specific road in the segment; and a data processor (414) coupled to the receiver; and wherein the software comprises instructions for control of the processor to; determine if the stretch is included in a portion of the itinerary to be traveled; if the stretch is not included, to keep using the itinerary; if the stretch is included, using the historical data to determine an alternative itinerary to the destination based on comparing a first expected travel time for the itinerary, given the current traffic progress, to a second expected travel time for the alternative itinerary; and depending on a result of the comparing, starting to provide the navigation information with respect to the alternative itinerary. - View Dependent Claims (4)
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5. A method of providing navigation information to a user of a mobile navigation device (118), depending on a geographic position of the device, for guiding the user to a pre-determined destination via an itinerary, wherein the method comprises:
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accessing a storage (406) storing information about a segment of a road network, including historical data representative of respective historical traffic progress on respective roads in the segment; receiving via a wireless receiver (404) data indicative of a current traffic progress on a stretch of a specific road in the segment; determining if the stretch is included in a portion of the itinerary to be traveled; if the stretch is not included, using the itinerary; if the stretch is included, using the historical data to determine an alternative itinerary to the destination based on comparing a first expected travel time for the itinerary, given the current traffic progress, to a second expected travel time for the alternative itinerary; and depending on a result of the comparing, starting to provide the navigation information with respect to the alternative itinerary. - View Dependent Claims (6)
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7. A method of providing navigation information to a user of a mobile navigation device (502;
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602), depending on a geographic position of the device, for guiding the user to a pre-determined destination via an itinerary, wherein the method comprises;
receiving (710) data from the device representative of the geographical position; determining (716) a segment of a road network relevant to the itinerary; determining (718) information about the segment, including historical data representative of respective historical traffic progress on respective roads in the segment; determining current traffic progress on a stretch of a specific road in the segment; determining if the stretch is included in a portion of the itinerary to be traveled; if the stretch is not included, using the itinerary; if the stretch is included, using the historical data to determine (720) an alternative itinerary (722) to the destination based on comparing a first expected travel time for the itinerary, given the current traffic progress, to a second expected travel time for the alternative itinerary; and depending on a result of the comparing, starting to provide the navigation information with respect to the alternative itinerary. - View Dependent Claims (8)
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602), depending on a geographic position of the device, for guiding the user to a pre-determined destination via an itinerary, wherein the method comprises;
Specification